St. Constant, Quebec (1921 census)
St. Constant was a census subdivision in Quebec, recorded in the 1921 Census of Canada with a population of 1,411. The community is grounded to Wikidata Q112912031. The administrative centroid was at approximately 45.351°N, 73.587°W.
Population
In 1921, St. Constant had a population of 1,411: 714 male and 697 female residents.
Population trajectory across census years
| Year | Population |
|---|---|
| 1861 | 2,388 |
| 1871 | 1,898 |
| 1881 | 1,722 |
| 1891 | 1,572 |
| 1901 | 1,525 |
| 1911 | 1,395 |
| 1921 | 1,411 |
Cross-year identity established by spatial polygon overlap (SAME_AS chains across the Canadian Census Subdivision boundary files).
Boundary continuity (non-identical overlaps)
Spatial polygon overlaps with adjacent census years where the boundary shifted enough that the SAME_AS chain didn't merge them. These show where the territory came from and went to even when it isn't tracked as the same persistent place.
Earlier boundary forms
- In an earlier year, this CSD was contained in St. Constant, 1911 (80.1% share).
Neighbouring Census Subdivisions in 1921
In the 1921 census, St. Constant shared boundaries with:
- Delson, VL
- Indian reserves (Sault St. Louis)
- Laprairie
- St. Isidore
- St. Mathieu
- St. Philippe
- St. Rémi de La Salle
Full census record, 1921
The 1921 census recorded 18 measurements for this Census Subdivision across 3 categories.
Population & families (1921). This community's record includes 1,411 total population, 714 males in the population, 701 males born in Canada, 697 females in the population, 684 females born in Canada, 13 males born in the British Empire (excluding Canada), 12 females born in the British Empire (excluding Canada), 1 females born outside the British Empire. (Source: 1921 Census of Canada, V1T16.)
Ethnic origin (1921). This community's record includes 1,351 persons of French origin, 51 persons of British origin (English), 5 persons of British origin (Irish), 3 persons of British origin (Scotch / Scottish), 1 persons of other European origin. (Source: 1921 Census of Canada, V1T27.)
Religion (1921). This community's record includes 1,332 Roman Catholics, 36 Baptists, 26 Presbyterians, 14 Anglicans (Church of England), 3 Methodists. (Source: 1921 Census of Canada, V1T38.)
Identifiers
- TCP UID:
QC064002— year-scoped identifier from the Canadian Census Subdivision boundary file - Persistent place ID:
PLACE_QC064002— computed from spatial-overlap chains across census years - Wikidata: Q112912031
Sources
Census tabulations from the 1921 Census of Canada, transcribed and georeferenced by the Canadian Peoples / TCP project, hosted at the HGIS Lab, University of Saskatchewan. Persistent place identity computed from spatial-overlap chains across all available census years (1851–1921). Identity grounding to Wikidata performed via the HGIS Canada Knowledge Graph project's MCP-assisted disambiguation pipeline. See the About / Methodology page for the full data pipeline.
Cite this page
Clifford, J. (2026). "St. Constant, Quebec (1921 census)" in HGIS Canada Knowledge Graph. Retrieved from https://jimclifford.ca/hgiscanada/places/qc/st-constant-qc064002-1921/.